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# How can I print the sum of even numbers from a user input ?

if a user inputs 10.how can I print the sum of even numbers from 1 to 10.

2 Answers

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@luka
I assume you meant to put the if statement inside the loop đ. Otherwise your still adding odd numbers.
Another way would be to make the for loop include even numbers only.
for(int i = 2; i <= input; i += 2)

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Or you can use math
The sum of the first n even numbers = n * ( n + 1 )
If the user enters 10, half of these are odd numbers, so you divide it by 2. ( and round it down if you have to )
5 * 6 = 30